Including Original "Paul H. Letters" Copyright © 1996-2018 Paul V. Heinrich - All rights reserved.

Monday, 18 July 2005



Paul H bristolia at
Mon Jul 18 14:02:05 EDT 2005

on July 18, 2005, Marcin quoted from previous post:


>>I think a few (including myself) may have

>>believed a man-made origin after seeing

>>that pic. Whether it was deliberately

>>manufactured or a by-product of an

>>industrial process..... well..... I guess we

>>will probably never know.

Marcin wrote:

>Jeff, list...

>After this photos I think none can have any

>doubts if this is natural or man-made product.

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>Grey surface is iron that become mat after

>etching in normal 10% solution. No any

>visible etching pattern. White squares is as I

>believe not dissolved nickel pieces that fall

>down to bottom and not have time to

>dissolve in iron-olivine solution.

After I forwarded pictures of non-etched
slices of Shirokovsky and compositional data
concerning the lithic fragments found in its
iron-nickel matrix to a metallurgist friend,
who prefers to remain nameless, I received
this comment:

"Based on the information given I would
concur that this is a man-made material,
probably derived from a furnace and quite
possibly part of a furnace lining, i.e. a
refractory brick that has been strongly
altered by reaction with the molten contents
of the furnace. This is supported by the
very iron-rich composition of the olivine
and the presence of magnesiowustite and
magnesioferrite. This conclusion is also
supported by the reported "eutectic" nature
of the metal-oxide intergrowth."

Best Regards,

Baton Rouge, LA

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